You can now convert legacy Advanced LUNs into new Advanced LUNs, which come with instant snapshots and performance improvements.

Added password strength meter for creating and modifying passwords.

When you install or upgrade your DSM version through the Internet, it will now automatically be upgraded to the corresponding DSM version with critical and security updates.
The following models are not available due to hardware performance limitations.

Fixed an issue where VAAI might fail after iSCSI LUN was recovered by LUN Backup.

Fixed an issue where LUN configuration might be inconsistent.

Minor bug fixes.

Version: 6.2-23739

(2018-05-24)

Important Note

The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.

Compatibility and Installation

DSM 6.2 can only be installed on Synology products running DSM 6.0 and above.

Starting from DSM 6.2, the core replication function is centrally managed by a new package, Replication Service. Packages with replication feature, such as Snapshot Replication, must install the Replication Service package.

For the following models, DSM 6.2 will be the last upgradable version. DSM 6.2 will continue to receive critical and security updates for a minimum of 2 years after the official release.

For easier management, Key Manager can now be stored locally on Synology NAS. Encrypted shared folders can be auto-mounted without the need of a USB drive. (To achieve better data protection, users are suggested to store Key Manager on an external USB drive.)

Standard users can now right-click on shared folders in File Station to view Properties.

Added support for IBM WebSphere SSO.

Enhanced password strength policy for better account security.

Added support for a new SMS provider SendinBlue and Clickatell API (RESTful).

Brand new iSCSI Manager built for IT administrators, providing a new management user interface for an optimized iSCSI management and monitoring experience.

Advanced LUN provides lightning-fast LUN snapshot creation and recovery, and LUN cloning within seconds, as well as VAAI/ODX, storage acceleration commands, and support for better VM performance. Since Advanced LUNs can utilize file system cache to provide better efficiency, block-level LUNs will no longer be supported on DSM 6.2 and onward. DSM 6.2 will still be compatible with the block-level LUNs upgraded from DSM 6.1 and prior.

Supports cross-volume LUN clones.

Added support for network binding settings to allow each iSCSI target to map to a network interface.

Users can now disable storage reclamation for thin-provisioned LUNs to enhance I/O performance.

Storage Manager

The brand new Overview shows the health status of all storage components on your NAS, displaying a clearer and better look on the system overview.

Introduced Storage Pool, a new storage component, to replace the original Disk Group and RAID Group, and rearrange storage-related functions to provide users with a more consistent and smoother experience.

Smart Data Scrubbing detects the supported file system and RAID type to perform data scrubbing automatically while enhancing data scrubbing usability. A new built-in scheduler allows users to do data scrubbing periodically with just a few clicks, improving data integrity and consistency.

RAID resync speed can now be adjusted to accommodate IT management needs.

Wi-Fi dongle does not support Parental Control and Device List if set as Bridge Mode.

Starting from DSM 6.2 Beta, Virtual Machine Manager will no longer support creating clusters with older DSM versions. Please update each host in the cluster to the same DSM version or above versions for the Virtual Machine Manager cluster to operate properly.

SSH authentication by DSA public key is prohibited for security concerns.

When logging in through VPN or Proxy server, some functionalities may have authentication issues. To fix this issue, please go to Control Panel > Security, and click the Trusted Proxies button to add the trusted proxy server to the list.

The original RAID scrubbing scheduled tasks will be migrated to Smart Data Scrubbing scheduled tasks. If the upgrade is performed while running scheduled tasks, the Data Scrubbing process will automatically be re-executed shortly after the upgrade is completed.

Office 2.x and below are not compatible with DSM 6.2.

Version: 5.2-5967-9

(2019-01-02)

Important Note

The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed an issue where iSCSI service could not start upon system boot with snapshot retention policy enabled in DSM 5.2-5644.

Fixed an issue where iSCSI service could not respond under certain conditions when LUN was being created or removed.

Fixed an issue where the system could not enter hibernation with Snapshot Manager for VMware registered.

To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.

Fixed an issue where permission settings for a shared folder could not be edited in Windows if the folder was mounted via SMB.

Version: 5.2-5644-8

(2016-04-13)

Fixed a security vulnerability regarding Samba file service (CVE-2016-2118, also known as Badlock).

Note: This update does not require system reboot.

Version: 5.2-5644-5

(2016-02-19)

Fixed Issues

Updated Firewall filter policy to fix a security vulnerability caused by stack-based buffer overflow (CVE-2015-7547). This fix may impact read/write performance on the following models by no more than 15%, for which Synology is working on an enhancement in the future release.

Version: 5.2-5644-2

Fixed Issues

Improved the stability when running memory test in Synology Assistant on XS/XS+ models.

Fixed an issue where the passive server in the high-availability cluster might take up too much space in the system partition when storing system statistics.

Version: 5.2-5644-1

(2015-11-17)

Fixed Issues

To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.

Enforced a minimal password length of six characters for the default admin account.

Improved general stability when numerous application privilege rules are applied to individual users/groups.

Version: 5.2-5644

(2015-11-13)

What's New

This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.2-5592.

Fixed Issues

Improved stability of FTP connections.

Improved stability when copying large files on DS216play.

Improved general stability and security fixes of NTP service (CVE-2015-7871).

Fixed an issue where SSD cache volume information may not be displayed correctly in Resource Monitor.

Fixed an issue where users with guest accounts would be unable to create new files or folders via SMB protocol.

Version: 5.2-5565

(2015-05-12)

Compatibility and Installation

DSM 5.2 can only be installed on Synology products running DSM 5.0 or above. Before starting, please log in to DSM and go to DSM Update to install the latest DSM.

Some features have specific hardware requirements and are only available on certain Synology NAS products.

Important Notes

DSM 5.2 is the last supported major DSM version for all 10-series models.

An issue of data consistency caused by SSD TRIM is not resolved yet; as a result, SSD TRIM is currently disabled in DSM 5.2.

DSM 5.2 is the last DSM version to support Time Backup as an add-on application in Package Center. Time Backup features will be fully merged into the built-in Backup package in future releases. Existing Time Backup users will not be affected.

Sharing via Facebook and Google+ will no longer be supported starting from DSM 5.2.

The link speed of drive tray 7 and 8 of DS1815+ is adjusted to 1.5Gbps to improve system stability and HDD compatibility. (added on 2016/8/12)

What’s New in DSM 5.2

Single Sign-On

You can register multiple DSM and access them using one set of credentials. After initial login, linked DSM accounts will automatically log in to avoid credential re-authentication.

Windows File Sharing

Added SMB3 and end-to end data encryption support.

Backup and Replication

Added support for file-level restoration with File Version Browser in multi-version backup tasks.

You can set up backup rotation to recycle old backup versions automatically in multi-version backup tasks.

Added data transfer encryption support for multi-version backup.

Added support for Amazon S3 China Region as a backup destination.

iSCSI LUN Snapshots

You can take iSCSI snapshots more frequently, up to every five minutes.

You can set the snapshot retention policy to retain a specific number of versions for hourly, daily, weekly, monthly, and yearly snapshots.

Link Aggregation

Added support for two new modes when creating a bond interface: Adaptive Load Balancing and Balance XOR.

SSD Cache

SSD cache now has a smaller memory footprint, consuming 90% less memory than DSM 5.1 for newly created SSD caches.

File Station

You can manage and transfer files to popular public cloud services such as Dropbox, Box, Google Drive, and OneDrive.

You can set usage quotas for different groups. The group usage quota is automatically applied when a user is added to the group.

What’s New in Packages

Single Sign-On Package

Based on the OAuth2 standard, SSO Server package turns Synology NAS into a SSO server that allows developers to register their web applications to the server and utilize the single sign-on feature. This increases daily productivity by saving time spent on re-authentication.

Docker

Docker is a lightweight virtualization application that gives you the ability to run thousands of containers created by developers from all over the world on DSM. The hugely popular built-in image repository, Docker Hub, allows you to find shared applications from other talented developers.

A step-by-step tutorial is introduced to guide you through the basic container creation.

Note Station

Added to-do list feature. You can add tasks to notes or add them independently to the to-do list.

Manage tasks by specifying a priority, due date, and reminder.

Synology Web Clipper is now available on the Chrome Web Store. You can clip web content directly to Note Station.

Export notebooks to a nsx file for backup or for importing to another Synology NAS.

Export individual notes as HTML files so that users without Note Station can read them.

You can archive seldomly used notebooks so that they will not be displayed in the notebook section or in search results.

You can use hotkeys to fast forward, rewind, and adjust the volume during video playback.

Subtitle files can now be located anywhere on your Synology NAS and no longer need to match the filename of your video files. Simply select them using the built-in chooser in Video Station during playback.

More code-pages supported to correctly recognize subtitles in different languages.

You can set a timing offset to sync subtitles with video playback.

You can customize video posters by selecting an image from your Synology NAS.

Redmine is a flexible project management web application. It has numerous features and can be run on Synology NAS via Docker.

GitLab

GitLab is a web-based Git repository manager with wiki and issue tracking features. It has numerous features and can be run on Synology NAS via Docker.

LXQt

LXQt is a desktop utility built on QT with partial Razor-qt and LXDE components. It comes with a basic graphical user interface which gives users the ability to leverage certain operating system features, such as web browsing. It has numerous features and can be run on Synology NAS via Docker.

SpreeCommerce

SpreeCommerce is a full-featured storefront tool built on common standards so you do not have to compromise speed to market, efficiency, or innovation. You can also easily leverage the advantages of modular design to configure, supplement, or replace the functionalities you need. It has numerous features and can be run on Synology NAS via Docker.

Discource

Discourse is a forum application software with a focus on user experience by introducing infinite scrolling, live updates, drag and drop attachments and more. It has numerous features and can be run on Synology NAS via Docker.

MantisBT

MantisBT is an open source, web-based issue tracker and project management tool with a focus on simplicity and flexibility. Users are able to get started quickly and manage their projects effectively, making collaboration with team members and clients easy and professional.

LimeSurvey

LimeSurvey is a powerful survey creation tool that help you easily create and publish intuitive and question-and-answer surveys and collect responses without the requirement of technical background. LimeSurvey also provides graphical analysis of the result for you to quickly find the information from the statistics. You also have the full control of whom to access the survey, either publish the survey publicly or limit only the users with the "once-only" token.

CMS

Enhanced general performance.

Bug fixes and usability enhancements.

Version: 6.2.2-24922

(2019-04-29)

Important Note

This update was re-released on Apr. 29 to fine-tune certain functionality and usability.

The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.

This update will restart your Synology NAS.

What's New in DSM 6.2.2

Added the new Smart Update function and adjusted the update mechanism of DSM.

You can now convert legacy Advanced LUNs into new Advanced LUNs, which come with instant snapshots and performance improvements.

Added password strength meter for creating and modifying passwords.

When you install or upgrade your DSM version through the Internet, it will now automatically be upgraded to the corresponding DSM version with critical and security updates.
The following models are not available due to hardware performance limitations.

Version: 6.2-23739

The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.

Compatibility and Installation

DSM 6.2 can only be installed on Synology products running DSM 6.0 and above.

Starting from DSM 6.2, the core replication function is centrally managed by a new package, Replication Service. Packages with replication feature, such as Snapshot Replication, must install the Replication Service package.

For the following models, DSM 6.2 will be the last upgradable version. DSM 6.2 will continue to receive critical and security updates for a minimum of 2 years after the official release.

For easier management, Key Manager can now be stored locally on Synology NAS. Encrypted shared folders can be auto-mounted without the need of a USB drive. (To achieve better data protection, users are suggested to store Key Manager on an external USB drive.)

Standard users can now right-click on shared folders in File Station to view Properties.

Added support for IBM WebSphere SSO.

Enhanced password strength policy for better account security.

Added support for a new SMS provider SendinBlue and Clickatell API (RESTful).

Brand new iSCSI Manager built for IT administrators, providing a new management user interface for an optimized iSCSI management and monitoring experience.

Advanced LUN provides lightning-fast LUN snapshot creation and recovery, and LUN cloning within seconds, as well as VAAI/ODX, storage acceleration commands, and support for better VM performance. Since Advanced LUNs can utilize file system cache to provide better efficiency, block-level LUNs will no longer be supported on DSM 6.2 and onward. DSM 6.2 will still be compatible with the block-level LUNs upgraded from DSM 6.1 and prior.

Supports cross-volume LUN clones.

Added support for network binding settings to allow each iSCSI target to map to a network interface.

Users can now disable storage reclamation for thin-provisioned LUNs to enhance I/O performance.

Storage Manager

The brand new Overview shows the health status of all storage components on your NAS, displaying a clearer and better look on the system overview.

Introduced Storage Pool, a new storage component, to replace the original Disk Group and RAID Group, and rearrange storage-related functions to provide users with a more consistent and smoother experience.

Smart Data Scrubbing detects the supported file system and RAID type to perform data scrubbing automatically while enhancing data scrubbing usability. A new built-in scheduler allows users to do data scrubbing periodically with just a few clicks, improving data integrity and consistency.

RAID resync speed can now be adjusted to accommodate IT management needs.

Wi-Fi dongle does not support Parental Control and Device List if set as Bridge Mode.

Starting from DSM 6.2 Beta, Virtual Machine Manager will no longer support creating clusters with older DSM versions. Please update each host in the cluster to the same DSM version or above versions for the Virtual Machine Manager cluster to operate properly.

SSH authentication by DSA public key is prohibited for security concerns.

When logging in through VPN or Proxy server, some functionalities may have authentication issues. To fix this issue, please go to Control Panel > Security, and click the Trusted Proxies button to add the trusted proxy server to the list.

The original RAID scrubbing scheduled tasks will be migrated to Smart Data Scrubbing scheduled tasks. If the upgrade is performed while running scheduled tasks, the Data Scrubbing process will automatically be re-executed shortly after the upgrade is completed.

Office 2.x and below are not compatible with DSM 6.2.

Version: 6.1.7-15284

(2018-05-23)

Important Note

The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed the compatibility issue of WD WD8001FFWX with the DX1215 expansion unit.

Version: 6.1-15047-1

(2017-02-25)

Fixed a security vulnerability with the Auto Block function that could allow remote attackers to bypass the current IP blocking mechanism.

Version: 6.1-15047

(2017-02-21)

Compatibility and Installation

DSM 6.1 can only be installed on Synology products running DSM 6.0. Before starting, please log in to DSM and go to Control Panel > Update & Restore to install the latest DSM.

Time Backup and HiDrive Backup will not be supported in DSM 6.1 and above.

We can not guarantee the accuracy or completeness of third party packages, which are not developed by Synology.

Manual re-indexing is required for all files after upgrading to DSM 6.1. The file indexing service in Control Panel has been moved to the preference settings in Synology Universal Search.

Due to infrastructure update, packages will need re-initialization after upgrading to DSM 6.1. The process will occupy a higher CPU usage and can take up to an hour depending on the number of packages installed.

Directory Server package must be disabled (stop) in Package Center before the upgrade if the server is running on a High Availability cluster.

The DSM Help articles in the following languages have been removed: Brazilian Portuguese, European Portuguese, Norwegian, Turkish, Hungarian, Swedish, Danish. In all the packages, the Help articles in these six languages will also be removed.

What’s New in DSM 6.1 Official

Extended Btrfs File System Coverage

Btrfs file system is now available on more Synology NAS models. Enjoy the powerful features of the next-generation file system.

Supports Bonjour service, allowing you to back up data to multiple shared folders via Time Machine.

Supports sparse files over the SMB protocol to enhance usage efficiency of file system space and network bandwidth.

You can now restore to a previous version from Windows Explorer when mounting your home folder via the SMB protocol.

After enabling files fast clone in File Service advanced settings, files can be copied at a faster speed when the source and destination are within the same Btrfs volume.

Storage Manager

RAID type can now be changed from SHR-1 to SHR-2, providing greater flexibility of storage expansion and better data protection. Note: Depending on your disk configuration, two additional disks may be required when changing your RAID type from SHR-1 to SHR-2. For more information, please refer to DSM Help.

Provides more types of disk health status to help you grasp the health info of your disks.

You can now migrate a single volume to a disk group and then create multiple volumes while using SHR (more flexible for models built on the 32-bit architecture with a single volume size limit of 16TB) .

Resource Monitor

IT administrators will receive notifications regarding performance issues of the CPU, memory, disks, or LUNs (available on XS+ and XS models).

I/O throughput of each process can now be monitored in Task Manager (available on models with Intel 64-bit processors).

Added the service-based view, allowing you to monitor resource usage of each service and application (available on models with Intel 64-bit processors).

Service Modularization

Some of DSM’s built­-in features have been modularized into packages to ensure better system maintenance and update flexibility.

Fixed an issue where system resources are not released properly after QuickConnect is enabled.

Fixed an issue where file indexing is not triggered when files are uploaded through Samba protocol.

Version: 6.0.2-8451-1

(2016-09-02)

Important Note

The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

Improved the stability of Btrfs file system when abnormal shutdown occurs under high system loads.

Fixed an issue where certain browsers and mobile apps might fail to connect to Synology NAS via HTTPS when HTTP/2 is enabled.

Fixed an issue where users might fail to log in after restoring system configurations from previous versions in the latest DSM 6.0.2.

Version: 6.0.2-8451

(2016-08-18)

Important Note

The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly. You can also manually download the patch file from Download Center.

What's New

This update includes all bug fixes as well as security fixes in the previously released updates since DSM 6.0.1.

You can now configure performance alarms on high-end models to notify system administrators when the resource utilization or performance metric meets the pre-defined criteria.

Fixed an issue where iSCSI service could not start upon system boot with snapshot retention policy enabled in DSM 5.2-5644.

Fixed an issue where iSCSI service could not respond under certain conditions when LUN was being created or removed.

Fixed an issue where the system could not enter hibernation with Snapshot Manager for VMware registered.

To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.

Fixed an issue where permission settings for a shared folder could not be edited in Windows if the folder was mounted via SMB.

Version: 6.0-7321-3

(2016-04-22)

Fixed multiple issues that might cause the iSCSI service to hang under heavy loading and performing VMware commands.

Fixed an issue where the file created time was not correctly set.

Fixed an issue where LUN backup tasks of Hyper Backup could not be completed due to insufficient disk space after upgrade to DSM 6.0.

Fixed an issue in which the configuration change of VLAN could result in abnormal functionality of certain packages. e.g. Surveillance Station

Fixed an issue where the DSM welcome title and message will be reset to default if users set it to blank.

Note: This update does not require system reboot.

Version: 5.2-5644-8

(2016-04-13)

Fixed a security vulnerability regarding Samba file service (CVE-2016-2118, also known as Badlock).

Note: This update does not require system reboot.

Version: 6.0-7321

(2016-03-24)

Compatibility and Installation

Some features have specific hardware requirements and are only available on certain Synology NAS products.

For security purposes, admin accounts with blank passwords will be disabled after the upgrade, and password change will be required.

Some third­-party packages may not be compatible with DSM 6.0; hence disabling the packages before upgrading to DSM 6.0 is necessary.

The current Alias settings in Application Portal will be disabled and require manual configuration after updating to DSM 6.0.

The DDNS of f3322.org is removed in DSM 6.0 official release due to unclarified domain usage violation. Please refer to http://www.pubyun.com/p/notice/ for details.

Due to the discontinued support by the open source team, the Asterisk package will no longer be supported after DSM 6.0.

If phpMyAdmin was upgraded during DSM 6.0 Beta 2, you need to uninstall it first so that its latest update will be available at Package Center.

The following packages will not be supported by NVR216 after upgrading to DSM 6.0:

PHP

Text Editor

Web Station

WebDAV

Internet Explorer 8 is no longer supported on DSM 6.0 and onward. Please refer to Software Spec for details

What’s New in DSM 6.0

Btrfs File System

Set usage/user quota for shared folders.

Enable file compression to increase the flexibility of volume usage.

Perform defragmentation to increase system performance.

Data checksum is enabled by default and data scrubbing can be run to verify data integrity.

When file versioning is enabled in Cloud Station, it will not occupy additional storage on Btrfs file system. On other file systems, file versioning will occupy additional space equal to the size of each shared folder.

Files will be backed up once the backup task is started, even if the files are changed or deleted afterwards.

Converting existing ext4 file system to Btrfs is not supported. To store files under Btrfs file system you must create a new Btrfs volume and move the files to the new file system.

DSM 6.0 has been optimized for all models based on Intel 64­-bit processors to improve general performance.

Supports over 4GB memory allocation for one single process to deploy large scale application.

High Availability Manager

When a split­-brain error occurs in an HA cluster, you can designate one server as the active server and overwrite the data on the other server. No full data replication is required.

When a split­-brain error occurs, you can view the recent system information, iSCSI Target connection history and file difference in each shared folder.

Reduced the downtime for upgrading a cluster by 50%.

Reduced the time to bind and unbind a cluster by 20%.

Reduced the occurrence of split­-brain errors.

Supports Docker DSM.

High Availability Manager for RC18015xs+

Supports Virtual DSM.

Supports Docker DSM.

Backup & Replication

Backup & Replication features are now available in ​add-­on packages Hyper Backup ​(backup client) and Hyper Backup Vault ​(backup server). The existing Backup & Replication task settings will be migrated to the new package automatically upon upgrading to DSM 6.0. Some settings are relocated to Control Panel:

rsync: Control Panel > File Services > rsync

Shared Folder Sync: Control Panel > Shared Folder Sync

For features of Hyper Backup ​and Hyper Backup Vault​, please refer to the What’s New in the Packages section.

Security

CSP support can effectively prevent XSS attacks.

TLS/SSL profiles can be adjusted according to your browser compatibility and security requirements.

Root account is replaced by administrators group credentials to log into SSH to enhance security.

Please note that the Beta program will continue after DSM 6.0 official release.

Starting from MailPlus Server 1.0 official release, MailPlus Server will include 5 free mail accounts by default, and licenses will be required for additional mail accounts. During the Beta program, no licenses will be required for any email accounts.

MailPlus Server provides enterprise­-grade mail server features and advanced active-­active architecture, allowing administrator to set up a high-­availability mail system with single server fault-­tolerance and load-­balancing abilities.

Active-­active mechanism ensures two-­way syncing of data between both servers to maximize the uptime for the mail system.

Load balancer smartly distributes incoming messages to ensure that the loadings on the two nodes are evenly balanced.

The specially designed algorithm allows you to search email content with a given keyword for an even more accurate result.

The spam-­filter has a much enhanced anti­-spam ability, especially for Chinese spams, by using implemented algorithm to analyze the meaning of the statement.

Customize spam filters by keywords for precise spam blocking.

The migration from the existing Mail Server to MailPlus Server is made seamless to let you continue using the previously hosted mail service.

Added support for running Surveillance Station on both Virtual DSM and
Docker DSM. (Please note that Surveillance Station running on Virtual DSM
or Docker DSM does not include any default surveillance device licenses.)

Added support for 2­-step verification using one-­time password (OTP) for
DSM 6.0 to provide extra security.

PetaSpace

PetaSpace is an application that combines the capacity of multiple
volumes into a larger volume group. With PetaSpace, data of a single
shared folder can now be located across multiple volumes, thus
allowing you to store, manage, and access the growing amount of
data more efficiently and flexibly.

Available on the following models:

16­-series: RS18016xs+

15­-series: RC18015xs+, DS3615xs

14­-series: RS3614xs+, RS3614xs, RS3614RPxs

13­-series: RS3413xs+, RS10613xs+

12­-series: DS3612xs, RS3412xs, RS3412RPxs

11­-series: DS3611xs, RS3411xs, RS3411RPxs

Cloud Station Server

Added support for setting user and group speed limit.

Integrated with DSM application privilege settings.

Offers Intelliversioning version rotation algorithm.

Run Cloud Station Server without enabling home service.

Enforce 2­-step verification to strengthen identity security.

Supports renaming shared folders when Cloud Station Server is
running.

Supports symbolic links.

Supports files containing "/" characters on Mac.

Now allows you to select multiple files/folders for restoration in
Version History.

Retains up to 32 versions of every backed up file and supports file
filtering. (Please refer to the software specifications for supported OS
versions.)

Cloud Sync

Synchronize a specified folder on the public cloud with a folder on
Synology NAS.

Configure multiple sync tasks in a single connection.

Sync a folder to multiple public cloud destinations.

Choose never to remove the data on the destination.

Supports read-­only shared folders.

Supports encrypted shared folders.

You can now customize the number of files to be concurrently
uploaded/downloaded.

You can now convert Google Docs to Microsoft Office or jpeg formats
in download­-only tasks to keep an offline backup copy.

Last modified time of synced files will be updated to Dropbox.

Now advanced consistency check can be disabled.

Supports creating a new remote folder during task creation.

Supports application privilege settings by group and IP.

Added support for:

Microsoft OneDrive for Business and Office 365

Microsoft OneDrive’s new API

HiDrive

Amazon S3 Standard -­ Infrequent Access storage class

Amazon S3 Seoul region

Reorganizes the order of public cloud services by device location.

Supports OpenStack keystone v3.

Now offers Windows and Linux decryption tools for data recovery.

Optimized memory usage.

Raised the minimum polling period to 10 seconds.

Directory Server

The Provider­-Consumer architecture in Directory Server allows the
account data to be continuously replicated from a "Provider"
Synology NAS to one or more "Consumer" servers. This ensures that
the connection between the clients and the server will not be affected
even when the Provider server is unavailable.

Password strength policy can now be applied to user accounts for
better security.

You can enforce regular and periodical password update to enhance
security. In addition, password expiration reminders will automatically
notify users to update their passwords via email or upon login.

Provided more detailed information, such as FPS, sample frequency,
and multiple audio tracks.

Added functions to edit video ratings and change the backdrop.

Customize library visibility according to your own preferences.

Subtitle size now can be adjusted to fit your preference.

Hyper Backup

Back up folders, packages, and DSM configurations to a multi­-version
repository and save backed up data in image formats to maximize
storage efficiency while retaining up to 65,535 versions for retrieval.

Supports port forwarding from a customized port of a backup task to a Synology NAS or a rsync server.

Now you can compress your files before transmitting them to the
backup target, saving the network bandwidth and storage
consumption.

Now allows multiple restore/download/copy tasks to run concurrently
in Hyper Backup Explorer.

With Hyper Backup installed, you can launch the Hyper Backup
Explorer by clicking the backup target in File Station.

Upgrade and migration:

The Backup & Restore ​package will be automatically migrated
to Hyper Backup upon upgrading from DSM 6.0 Beta 1.

The Backup & Replication ​package will be automatically
migrated to Hyper Backup upon upgrading from DSM 5.2.

Hyper Backup Vault

Hyper Backup Vault is a new package and will be automatically
installed upon upgrading to DSM 6.0.

You can enable backup services to allow another Synology NAS to
back up to your Synology NAS via Hyper Backup.

Provides an overview of the Hyper Backup targets backed up by other
Synology NAS servers.

Provides the information of each backup target, such as path, space
usage, last backup time, backup duration and backup logs.

With Hyper Backup Vault installed, you can launch the Hyper Backup
Explorer by clicking the backup target in File Station.

Hyper Backup Explorer​(for Windows and Linux)

Now you can use Hyper Backup Explorer to browse backup data right
from your Windows and Linux computers.

Note Station

Offline Note Station is now available in Chrome Web Store. You can
create and edit notes or to-­do lists without Internet connection, and
all updates will be synchronized to Note Station in DSM when the
Internet is connected.

Use Synology Web Clipper to save selected content of MailPlus or
Gmail to Note Station.

Convert tables into charts, including line charts, bar charts, and pie
charts.

Choose a template for your presentation.

Click to expand images to their original size in presentation mode.

Apply heading formats to texts to switch slides in presentation mode.

Create Smart Notebooks according to different criteria. Existing and
future notes that match the criteria will be automatically added to the
Smart Notebook.

Insert the internal link of another note and open it directly via the
hyperlink.

The search feature in Note Station now includes results based on the
content of attached files of various formats, including PDF, Office,
Open Office, and iWork file.

The attachments in PDF, word, excel, and powerpoint formats can be
previewed in Note Station directly with the Document Viewer
package.

You can add stars, remarks and subtasks to to-­do tasks.

You can share notes or notebooks with a group.

Supports exporting/importing to­-do tasks for backup.

Allows you to output to-­do tasks to a new note and customize its
display options.

PDF Viewer/Document Viewer

View various popular document formats on DSM, including Microsoft
Office and Open Office files (Document Viewer only).

Brand-­new designed user interface with comprehensive tools
including rotation, zoom­-in/out, search, and much more.

Fixed an issue where operations might fail when deleting or restoring a
large amount of files from the quarantine.

Fixed an issue where DSM system files might be deleted due to false alarm.

Antivirus -­ Essential

Upgraded ClamAV and McAfee scanning engine.

Fixed an issue where operations might fail when deleting or restoring a
large amount of files from the quarantine.

Fixed an issue where DSM system files might be deleted due to false alarm.

VPN Server

Enhanced transmission performance of PPTP/L2TP.

Minor bug fixes.

Web Station

Each Virtual Host can be set with an individual setting including PHP
version, server backend, document root and secure connections.

More PHP extensions are supported to increase the flexibility of your
own web site.

Media Server

Supports hardware transcoding on DS216play, DS716+, and DS216+.

Fixed an issue where video may not be sought when streaming videos
from DS216play and DS716+.

Minor bug fixes.

Logitech Media Server

Updated the stable version to 7.7.6.

Audio Station

Provides year information in album list.

Provides folder path of playlist for better recognition.

Enhanced browsing performance.

Added support for multi­-genre, allowing you to classify music more
flexibly.

Added an artist category in genre.

Photo Station

Added support for watermark to help protect the copyright of your
photos.

The plugin in WordPress, Joomla, and Drupal allows you to access Photo
Station directly and add photos or albums to these three platforms.

Windows AD and LDAP users can use Personal Photo Station now.

Supports html script for embedding Photo Station to other websites.

Security enhancement with XSS attack prevention.

Extend file size limitation of uploading and playing videos from 2GB to
32GB for 64 bits models.

Added a feature to prevent photos from being embedded via HTML
iframe.

Supports migration flow to export Photo Station blog and import to
WordPress.

Adjusted re­-order flow and new method to create a new album on photo
wall.

Shows photo shooting time and geolocation information on lightbox as
well as slideshow mode.

Docker

Upgraded to Docker 1.9.

Supports Docker Compose.

Download Station

Download files from more file hosting sites.

Added support for more premium accounts.

Added support for downloading tasks that require CAPTCHA
passwords.

Personal notification is supported so every user can set their personal
email to receive notifications.

File hosting plugin can be updated automatically.

Degraded NZB files can be repaired with .par2 files.

Storage Analyzer

Supports the application backup in the Hyper Backup package.

CardDAV

You can now edit contact information in DSM.

You can quickly build your contact list by importing data.

Supports exporting contact information to be used in other software.

Java 7/8

Java derives much of its syntax from C and C++ but has a simpler
object model and fewer low-­level facilities than either.

Java Manager is replaced by the new Java package for a more
convenient installation procedure.

You may enjoy the built­-in Java or manually install Java from Oracle
for enhanced compatibility.

Known Issues & Limitations

For locally modified files in a read­-only sync folder, the status will always be
"syncing" in DS cloud.

Re-­enabling indexing services previously set will be required when you
upgrading DSM 6.0.

Upgrade to DSM 6.0 will trigger media indexing for Audio Station browsing
enhancement.

Because of structure change, some notifications that occurred before the
upgrade could abnormally displayed. All notifications generated after
upgrading to DSM 6.0 will be shown normally.

MailPlus and MailPlus Server:

Initial retrieval of mail using the POP3 fetch function may take longer
than usual.

MailPlus Server is required to be configured before running MailPlus.

MailPlus is required to be installed on both Synology NAS devices to ensure stability when switching load balancing services from one server to the other for MailPlus Server.

Both Synology NAS devices must have identical MailPlus application portal and privilege settings to ensure stability when switching load balancing services from one server to the other for MailPlus Server.

To upgrade the MailPlus Server in active­-active mode from Beta 1/Beta 2 version to the official version, it is required to remove the cluster mechanism first and upgrade two nodes separately. After the upgrade, set up the active-­active cluster with two nodes again and the data will be synced automatically. Such initiative will not be required after DSM 6.0.

The function to customize library visibility will not be applied to DS video in
the following mobile platforms: iOS, Windows Phone, Roku TV, and Samsung
TV.

After converting the permission type to ACL, the settings in Photo Station and
File Station may still be inconsistent. For better user experience, the shared
folder "photo" will be converted automatically back to Linux mode if you
have done the ACL conversion in DSM 6.0 RC.

Version: 5.2-5644-5

(2016-02-19)

Fixed Issues

Updated Firewall filter policy to fix a security vulnerability caused by stack-based buffer overflow (CVE-2015-7547). This fix may impact read/write performance on the following models by no more than 15%, for which Synology is working on an enhancement in the future release.

Version: 5.2-5644-2

Fixed Issues

Improved the stability when running memory test in Synology Assistant on XS/XS+ models.

Fixed an issue where the passive server in the high-availability cluster might take up too much space in the system partition when storing system statistics.

Version: 5.2-5644-1

(2015-11-17)

Fixed Issues

To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.

Enforced a minimal password length of six characters for the default admin account.

Improved general stability when numerous application privilege rules are applied to individual users/groups.

Version: 5.2-5644

(2015-11-13)

What's New

This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.2-5592.

Fixed Issues

Improved stability of FTP connections.

Improved stability when copying large files on DS216play.

Improved general stability and security fixes of NTP service (CVE-2015-7871).

Upgraded PHP to 5.5.2 to address two vulnerabilities (CVE-2015-0235 and CVE-2015-0273).

Minor bug fixes.

Version: 5.2-5565

(2015-05-12)

Compatibility and Installation

DSM 5.2 can only be installed on Synology products running DSM 5.0 or above. Before starting, please log in to DSM and go to DSM Update to install the latest DSM.

Some features have specific hardware requirements and are only available on certain Synology NAS products.

Important Notes

DSM 5.2 is the last supported major DSM version for all 10-series models.

An issue of data consistency caused by SSD TRIM is not resolved yet; as a result, SSD TRIM is currently disabled in DSM 5.2.

DSM 5.2 is the last DSM version to support Time Backup as an add-on application in Package Center. Time Backup features will be fully merged into the built-in Backup package in future releases. Existing Time Backup users will not be affected.

Sharing via Facebook and Google+ will no longer be supported starting from DSM 5.2.

The link speed of drive tray 7 and 8 of DS1815+ is adjusted to 1.5Gbps to improve system stability and HDD compatibility. (added on 2016/8/12)

What’s New in DSM 5.2

Single Sign-On

You can register multiple DSM and access them using one set of credentials. After initial login, linked DSM accounts will automatically log in to avoid credential re-authentication.

Windows File Sharing

Added SMB3 and end-to end data encryption support.

Backup and Replication

Added support for file-level restoration with File Version Browser in multi-version backup tasks.

You can set up backup rotation to recycle old backup versions automatically in multi-version backup tasks.

Added data transfer encryption support for multi-version backup.

Added support for Amazon S3 China Region as a backup destination.

iSCSI LUN Snapshots

You can take iSCSI snapshots more frequently, up to every five minutes.

You can set the snapshot retention policy to retain a specific number of versions for hourly, daily, weekly, monthly, and yearly snapshots.

Link Aggregation

Added support for two new modes when creating a bond interface: Adaptive Load Balancing and Balance XOR.

SSD Cache

SSD cache now has a smaller memory footprint, consuming 90% less memory than DSM 5.1 for newly created SSD caches.

File Station

You can manage and transfer files to popular public cloud services such as Dropbox, Box, Google Drive, and OneDrive.

You can set usage quotas for different groups. The group usage quota is automatically applied when a user is added to the group.

What’s New in Packages

Single Sign-On Package

Based on the OAuth2 standard, SSO Server package turns Synology NAS into a SSO server that allows developers to register their web applications to the server and utilize the single sign-on feature. This increases daily productivity by saving time spent on re-authentication.

Docker

Docker is a lightweight virtualization application that gives you the ability to run thousands of containers created by developers from all over the world on DSM. The hugely popular built-in image repository, Docker Hub, allows you to find shared applications from other talented developers.

A step-by-step tutorial is introduced to guide you through the basic container creation.

Note Station

Added to-do list feature. You can add tasks to notes or add them independently to the to-do list.

Manage tasks by specifying a priority, due date, and reminder.

Synology Web Clipper is now available on the Chrome Web Store. You can clip web content directly to Note Station.

Export notebooks to a nsx file for backup or for importing to another Synology NAS.

Export individual notes as HTML files so that users without Note Station can read them.

You can archive seldomly used notebooks so that they will not be displayed in the notebook section or in search results.

You can use hotkeys to fast forward, rewind, and adjust the volume during video playback.

Subtitle files can now be located anywhere on your Synology NAS and no longer need to match the filename of your video files. Simply select them using the built-in chooser in Video Station during playback.

More code-pages supported to correctly recognize subtitles in different languages.

You can set a timing offset to sync subtitles with video playback.

You can customize video posters by selecting an image from your Synology NAS.

Redmine is a flexible project management web application. It has numerous features and can be run on Synology NAS via Docker.

GitLab

GitLab is a web-based Git repository manager with wiki and issue tracking features. It has numerous features and can be run on Synology NAS via Docker.

LXQt

LXQt is a desktop utility built on QT with partial Razor-qt and LXDE components. It comes with a basic graphical user interface which gives users the ability to leverage certain operating system features, such as web browsing. It has numerous features and can be run on Synology NAS via Docker.

SpreeCommerce

SpreeCommerce is a full-featured storefront tool built on common standards so you do not have to compromise speed to market, efficiency, or innovation. You can also easily leverage the advantages of modular design to configure, supplement, or replace the functionalities you need. It has numerous features and can be run on Synology NAS via Docker.

Discource

Discourse is a forum application software with a focus on user experience by introducing infinite scrolling, live updates, drag and drop attachments and more. It has numerous features and can be run on Synology NAS via Docker.

MantisBT

MantisBT is an open source, web-based issue tracker and project management tool with a focus on simplicity and flexibility. Users are able to get started quickly and manage their projects effectively, making collaboration with team members and clients easy and professional.

LimeSurvey

LimeSurvey is a powerful survey creation tool that help you easily create and publish intuitive and question-and-answer surveys and collect responses without the requirement of technical background. LimeSurvey also provides graphical analysis of the result for you to quickly find the information from the statistics. You also have the full control of whom to access the survey, either publish the survey publicly or limit only the users with the "once-only" token.

CMS

Enhanced general performance.

Bug fixes and usability enhancements.

Version: 5.1-5022-5

(2015-04-23)

Fixed Issues

Fixed a vulnerability that could allow unauthorized access to the shared folders via SMB protocol.

What's New in DSM 5.1

Application Armor kernel security module is now enabled in DSM. Each system program is associated with a security profile that restricts certain functions, protecting against unknown threats from malicious software.

Service by Interface

You can set the network interface that each service will use in Control Panel > Info Center > Service.

App Privileges

You can assign application privileges for local and domain groups.

You can define application privileges according to IP address.

DSM Auto Update

You can create a schedule to install DSM updates automatically to keep your Synology NAS up-to-date.

You can create RAID groups and RAID arrays. A RAID group for Multiple Volumes or iSCSI LUNs (Block-Level) that use RAID 5 or RAID 6 may contain multiple RAID arrays.

You can no longer create or expand Synology Hybrid RAID arrays, however existing volumes can still be used.

Log Center

Added IPv6 support for log sending and receiving.

Added supports for customized log formats.

MyDS Center

Added a wizard to consolidate multiple MyDS accounts into one account for easy management and convenience. If you have multiple MyDS accounts, complete this wizard so you can continue enjoying our MyDS Center services.

You can easily monitor MyDS related services (DDNS/QuickConnect) at a glance.

You can modify account information and subscriptions directly in DSM.

Text Editor

You can now use hotkeys to quickly perform common actions.

You can convert between Traditional and Simplified Chinese text.

DSM Desktop

Push notifications can now be sent via Chrome and Safari.

You can change the main menu style to drop-down.

You can adjust the size of Desktop icons to be smaller.

Misc

You can set global firewall rules for all network interfaces.

You can set default permissions for external drives.

You can define each FTP user’s root folder to be a folder other than their home folder.

You can filter Domain Users and Groups by Organizational Unit.

A command-line-based FTP client is built-in for automated tasks.

You can now customize the SSH port.

Python core is now built-in.

What's New in Packages

Note Station

Note Station helps you fully enjoy writing, viewing, managing, and sharing content-rich notes. It is very easy to create content with rich text editing, media embedding, attachments, and much more. Manage your notes by using tags and grouping notes into Notebooks. You can also import your notebooks and notes from Evernote to centralize all your notes in one convenient place. When you are ready, Note Station makes sharing your content via social networking platforms simple and quick. Create, share, and enjoy!

Cloud Station

You can sync data according to Unix or Windows ACL privileges.

Added support for syncing encrypted shared folders.

Administrators can control the file type and file size specific users can sync.

Proxy Server provides caching and access control for HTTP-based services. With caching, you can reserve caching storage space on your Synology NAS to store HTTP-based content from the web. You can also use Proxy Server to deny users from accessing restricted web services, keeping your network safe and productive.

VPN Server

Added IPv6 support for OpenVPN (Requires DSM 5.1).

Glacier Backup

You can restore data at the file-level instead of whole archives through the new Explore feature.

You can now remove a specific file or folder from Amazon Glacier.

Added support for file-deduplication within the same backup task, saving your Amazon storage space tremendously.

Video Station

You can use the new home page to view recently added, released, and watched videos at a glance.

In the homepage of TV Recording, streaming online programs and setting recording tasks is now easier and quicker.

You can use the real-time filter to find your favorite videos quickly, and save the result as a smart collection.

You can view the display in three different modes – Poster, Tile, and List View.

You can use the “Watched” status on each video to keep track of videos you have already watched.

Retrieve online subtitles when starting to play a movie.

You can share a video collection via a sharing link, allowing anyone with the link to play the videos without having a DSM account. The page is optimized for display on desktop and mobile browsers.

Video information can be saved as files for data backup.

Audio Station

You can rate songs in your library and categorize music by rating.

You can import rating information from iTunes.

Search results will be displayed according to artist, album, and song title.

You can share your favorite playlist via a sharing link that is optimized for display on computer and mobile browsers.

You can set your favorite music to play in the background during a slideshow.

You can share photos in a virtual collection that is optimized for display on computer and mobile browsers.

Added support for sorting photos from oldest to latest in Timeline view.

Download Station

Redesigned visual style.

Added file hosting support for mega.co.nz.

You can save up to five different BitTorrent search results.

Mail Server

Mail Server can scan messages for potentially dangerous content.

You can send daily reports about the status of Mail Server. The report will include summaries of hourly traffic, delivered/received messages, deferred/rejected messages, SMTP delivery failures, warnings, and the quantity of senders and recipients.

Fixed one SNMP vulnerability where the improper validation of input could allow remote attackers to cause a denial of service (CVE-2014-2284).

Implemented minor fixes related to the ShellShock Bash vulnerabilities previously addressed in DSM 4493-05 updates (CVE-2014-6277, CVE-2014-6278, CVE-2014-7186 and CVE-2014-7187, or as known as Bash 4.2-51, 4.2-52, and 4.2-53 for their Bash Patch-ID).

Updated to the last version of PHP 5.3, announced EOL by the official PHP development team, to address multiple security vulnerabilities (CVE-2014-3981, CVE-2014-3515, CVE-2013-6712, CVE-2014-0207, CVE-2014-0238, CVE-2014-0237, CVE-2014-4049).

Version: 5.0-4493-3

(2014-07-24)

Improvements

Improved the stability of volume expansion.

Fixed Issues

Fixed two SAMBA vulnerabilities which allowed remote attackers to use the weaknesses to perform DoS attacks (CVE-2014-0244, CVE-2014-3493).

Fixed an issue which prevented users from being able to log into DSM after completing QuickConnect Wizard after a fresh DSM installation.

Fixed an issue causing slow response time in DSM on the early version of RS10613xs+ when too many concurrent connections were active.

Version: 4.3-3827-2

(2014-04-21)

Compatibility and Installation

DSM 4.3-3827 Update 2 can only be installed on Synology products running DSM 4.3-3827 via DSM Update. Please log in to DSM, go to Control Panel > DSM Update, click Update Settings and select Important Updates Only to see and install the update.

Change Log

Fixed a critical security issue of OpenSSL (Heartbleed) to prevent secret keys from being compromised. (CVE-2014-0160)

Fixed an issue causing the homes shared folder to become inaccessible after being moved to another volume.

Fixed an issue allowing the basic information of Synology NAS devices to be obtained outside of the local network without authentication.

Fixed password recovery e-mail to include the correct port number even when launched in Application Portal with customized ports.

Version: 5.0-4458-2

(2014-04-10)

Change Log

Fixed a critical security issue of OpenSSL (heartbleed) to prevent secret keys from being compromised. (CVE-2014-0160)

Enhanced the reliability of moving shared folders to different volumes.

Fixed a security issue causing encrypted shared folders to be mounted automatically after resetting the admin's password by pressing the reset button.

Fixed an issue causing system services and applications to possibly stop working.

Multiple version backup is now available on local backup, backup to another DiskStation. Only the differential blocks of data are retained among each version, allowing file history to be maintained with better storage efficiency.

Overview page displays scheduled and completed backup tasks.

Credentials for creating backup destinations can be saved as a profile to make backup task creation easier.

Data and configuration backup created in DSM 5.0 can only be restored in DSM 5.0.

Data and configurations that were backed up in DSM 5.0 cannot be restored using DSM 4.3 or earlier.

Shortcuts on DSM Desktop that were created previously will be cleared after upgrading to DSM 5.0.

Shared Folders with Windows ACL Permissions

The access permissions of shared folders are based on Windows ACL, allowing you to fine-tune permissions beyond just Read Only, Read/Write, No Access. Newly created shared folders implement the permission settings of Windows ACL.

For shared folders created in DSM 4.3 or earlier, you can either convert the existing permissions to Windows ACL, or leave the permission unchanged.

The shared folders - photo, surveillance, and shares on external storage or volume with ext3 file system cannot use Windows ACL permissions.

Storage Manager

New overview displays the overall health of all disks and volumes, as well as hard disk utilization, volume, and iSCSI LUN usage.

Disk health information includes the current and historical health of hard disks

SSD Cache

Read/Write cache is supported. Two identical SSDs can be combined to create a RAID 1 read-write cache and enhance the performance of a volume or block-level iSCSI LUN.

A high-availability cluster cannot be created when SSD read-write cache is enabled.

Package Center

Auto updating allows packages to be updated automatically.

Log Center

Syslog Server and System Logs have been integrated into a single, centralized application.

File sharing links can be created and shared with your Google+ and Facebook friends. Those who receive the link will be asked to enter their Google+ or Facebook login credentials before accessing the folder or file.

You can view Microsoft Office documents using Office Online when QuickConnect is enabled.

Text Editor

Plain text files can be edited directly in DSM.

Rich features are available, such as the ability to change character encoding, recognize file types, and see variable highlighting.

DSM Help

Online help files can be viewed in DSM Help, allowing you to read the latest versions of documentation regarding DSM and packages.

Font size can be changed to larger sizes.

Web Station

The “http” group (http) is the service account for Web Station, introducing better flexibility and security. Web applications will run as the same permission as “http” group. We suggest reviewing the permissions of the web folder and assign appropriate permissions to http group.

For VMware environments, you can install Synology Snapshot Manager for VMware vCenter Server on Windows Server. After installation, when a snapshot is triggered on DSM, vCenter Server will be notified and flush all the data from memory to the LUN to guarantee data consistency. Once the snapshot is complete, vCenter Server will resume normal I/O operation of VMware datastore.

For Windows environment, you can install Synology Snapshot Manager for Windows Server. After installation, when a snapshot is triggered on DSM, Synology Snapshot Manager will use the Microsoft Volume Shadow Copy Service (VSS) technology to produce consistent point-in-time copies of data. Synology Snapshot Manager for Windows Server also supports performing snapshots when triggered by 3rd party software via VSS.

Optimized CPU usage when multiple HTTP connections are established to the same Synology NAS.

Fixed an issue where downloading a whole folder may fail in Internet Explorer.

Fixed an issue where the banner of Photo Viewer and Video Viewer may be hidden if Remove Banner in Control Panel > Application Portal > Options is selected.

Fixed an issue where Synology NAS may not be able to hibernate when Audio Station is running.

All the fixes that have been delivered in DSM 4.3-3776 Update 1 and Update 2 are included in this update.

Version: 4.3-3776-2

(2013-09-26)

Compatibility and Installation

DSM 4.3-3776 Update 2 can only be installed on Synology products running DSM 4.3-3776 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

Enhanced the security of DSM operating system.

Fixed an issue where thumbnails may not be generated correctly.

All of the fixes that have been delivered in DSM 4.3-3776 Update 1 are included in this update.

Version: 4.3-3776-1

(2013-09-17)

Compatibility and Installation

DSM 4.3-3776-1 can only be installed on Synology products running DSM 4.3-3776 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

Enhanced the stability of iSCSI LUN and volumes.

Enhanced the security of DSM operating system.

Resolved a compatibility issue so that you can install Photo Station 5 on DSM 4.3.

Version: 4.3-3776

(2013-08-27)

Compatibility and Installation

DSM 4.3 can only be installed on Synology products running DSM 4.0 or later. Before starting, please log into DSM and go to Control Panel > DSM Update to install the latest available update.

The following packages must be updated to be compatible with DSM 4.3: Photo Station, Audio Station, Video Station, and Media Server, AntiVirus by McAfee, Antivirus Essential.

Some features have special hardware requirements and are only available on select models.

What's New

Windows Offloaded Data Transfer (ODX) Support

Offloaded Data Transfer (ODX) introduces an efficient way to move data between a data source and destination by offloading the I/O burden to your storage device, thus saving network bandwidth, computation power on the host, and improving performance at same time.

The data source and destination can be on the same LUN, two different LUNs hosted on the same Synology NAS, or two LUNs on two different Synology NAS.

If the data source and destination are located on LUNs located on the same volume, cloning will be processed by Synology Advanced LUN technology which saves up to 99.9% of the storage space consumption and accelerates cloning at the same time. To leverage Synology Advanced LUN technology for cloning on ODX, you are suggested to format the NTFS volume with 8K or above cluster size.

To use ODX, the computer initiating the data transfer must be running Windows 8 or Windows Server 2012 and the type of iSCSI LUN has to be file-based iSCSI LUN with Synology Advanced LUN technology option enabled.

SSD TRIM Support

SSD TRIM can prevent the performance degradation therefore improves the read and write performance of volumes created on SSDs, increasing efficiency as well as extending the lifetime of your SSDs. See the list below for verified SSD with TRIM support.

You may customize a schedule to choose when the system will perform TRIM.

SSD TRIM is not available when an SHA cluster exists.

TRIM cannot be enabled on iSCSI LUN.

SSD Cache

SSDs installed in any HDD slots can be mounted as cache to accelerate the performance of multiple volumes or LUNs.

Trust Domain Support in Active Directory

Users and groups belonging to trusted domains can be assigned privileges to access files or run applications after your DiskStation joins a Windows domain.

You can specify how often the DiskStation automatically updates the domain user/group list.

If you use a different LDAP server with different attributes for account names and group names, there are now options to specify or customize how user and group information is mapped to LDAP attributes.

NFS

NFS v4 support has been added, including pseudo file system and a stateful protocol.

NFS v3 and v4 now support IPv6.

NFS v3 and v4 security have been enhanced with Kerberos protocol, introducing three levels of security service: authentication, integrity (prevents tampering with NFS payload), and privacy (protects the content of NFS traffic from eavesdropping).

If Kerberos security flavor is implemented, you can map the NFS client to a local user, a domain user or a LDAP user.

Additional NFS settings have been added for NFS v3 and NFS v4, such as default read and write packet size, or allow clients to access NFS servers with insecure, non-privileged ports.

Speed Limit Scheduler

Bandwidth speed limits can now be configured according to a schedule, so speed limits will take effect at specific times only.

Varying speed limits can be customized for each user and group, allowing you to implement different limits at different times.

Task Scheduler

When creating tasks to automatically empty recycle bins, you can now define a retention policy to control what files are permanently deleted according to time, size, or file types.

You can drag-n-drop files or folder to your desktop to download them easily. Supports Google Chrome browser only.

Enhanced the compatibility of mounting a share located on a Mac OS 10.7 (or later) via SMB file service.

Advance Options for Windows File Service (SMB)

The following advance options for Windows File Service (SMB) have been added: DirSort VFS module; Veto files (hide files according to specified criteria); symbolic links and wide links; MSDFS VFS module (allowing symbolic links to point to files or folders located on another server); save debug logs; and clear SMB cache files.

Package Center

A default volume on which packages being installed can be specified, simplifying package installation.

Disk Usage Report

You can easily remove duplicated files in the disk usage report.

3G/4G USB Dongle Support

A 3G/4G USB dongle can be plugged into your NAS, allowing it to connect to a mobile network. On DS213air or DiskStations with Wi-Fi dongle, you can share your 3G/4G Internet access with tablets and laptops wirelessly.

Time-based Parental Control: Allows you to control when each client device connected to the DiskStation's local network can access the Internet. The feature are available on DS213air only.

UPnP Internet Gateway: Enable UPnP service to allow your DiskStation to become a UPnP Internet Gateway device, so that devices that are connected to the local network of the DiskStation can configure port forwarding settings with UPnP. For DS213air or other drives with USB Wi-Fi adapter plugged only.

PPPoE Relay: Allows devices that are connected to the DiskStation to connect to the Internet via PPPoE connection. For DS213air or other devices with USB Wi-Fi adapters only.

DSM Update

You can change DSM update settings to always install the latest version of DSM and critical updates, or install critical updates only.

Select cameras to customize Multi live views (by camera group or by DiskStation)

Enable / disable IP cameras.

View key camera information.

Digital zoom in / out on PT cameras.

Support for audio streams.

DS cloud for Android

Allows you to select a specific folder on the Android device to sync data.

DS file for Windows Phone

DS file for Windows Phone allows you to browse and manage files stored on your DiskStation, as well as upload photos from the Camera roll directly to the DiskStation.

You can create sharing file links, protecting them with a password and an expiration date, compressing and extracting files on your DiskStation, or adding folders you access most often to your “Favourites” list.

You have to upgrade your DiskStation to DSM 4.3 to run this app.

DS video for ROKU

DS video lets you access Video Station on your Synology NAS server, to watch videos, record digital TV programs, or simply stream them live. Categorize your videos with either default or custom libraries and create your own video collection lists for quick access.

You have to upgrade Video Station to 1.2 to have all features of DS video.

Version: 4.2-3211

(2013-04-18)

What's New

Fixed an issue where users could not connect to the DiskStation via FTP over SSL.

S.M.A.R.T. Test Scheduler -- You can now perform S.M.A.R.T. tests according to your individual schedule. For example, S.M.A.R.T.tests can be scheduled to run monthly or automatically test all of the disks in your DiskStation.

Volume Creation and Expansion Enhancements: The speed of volume creation and resizing have been improved up to 14 and 85 times. The chart below is the comparison between DSM 4.1 and DSM 4.2.

DSM 4.1

DSM 4.2

Improvement

DS412+ (Create 1TB Volume on a Disk Group)

314 sec

23 sec

14x

DS412+ (Expand 1TB Volume to 2TB on a Disk Group)

2675 sec

31 sec

85x

File Services for Windows, Mac OS, and Linux

SMB2 Protocol Support for Windows File Service -- SMB 2 protocol has general improvements to allow for better network utilization.

Large MTU Support for SMB2. The Large MTU (maximum transmission unit) option allows users to utilize the network capabilities better and achieve faster transferring speed. You can enable this option through a registry key on Windows computers.

AFP (Apple File Protocol) Performance Enhancements -- The speed of file transfers to the DiskStation has improved up to 52%. The following is a comparison between DSM 4.1 and DSM 4.2.

DSM 4.1

DSM 4.2

Improvement

DS212+

45.2 MB/s

68.6 MB/s

51.6%

Network Backup, rsync, and Shared Folder sync -- The performance of these feature has been generally improved when transferring large numbers of folders and files. The following is a comparison between DSM 4.1 and DSM 4.2.

DSM 4.1

DSM 4.2

Improvement

Backup 5000x 1MB files in 1110 folders from DS213+ to DS212

32.8 sec

14.55 sec

2x

The time used to run the backup task for the second time.

File Station

Single Page of Files -- You can now browse up to 1000 files on one single page.

Thumbnail View -- Files and pictures can be displayed as large icons or thumbnails of pictures, if available.

More Apps for Enterprise Users -- Enterprise users can now enjoy more features of DSM with LDAP or AD accounts. Supported packages includes Cloud Station, Audio Station, Video Station, Mail Server, and Mail Station.

Task Scheduler

Automate Tasks -- Task Scheduler allows you to schedule and run tasks at pre-defined times. Tasks include running user-defined scripts, cleaning the Recycle Bin on a regular basis, and starting and stopping services, among others.

Disk Usage Report

Easily Monitor Storage Usage -- The disk usage report feature displays the following information: the outstanding storage usage of users, the status of volume usage, trends based on past usage, the percentage of disk space that each file type occupies, the size of shared folders, and the largest, most, least frequently modified files.

Stream music with Bluetooth -- You can to connect multiple USB Bluetooth adapters to your DiskStation and connect to A2DP Bluetooth devices, such as speakers or headphones in order to easily stream music stored on your DiskStation.

DDNS

Support for Multiple DDNS Hosts-- More than one DDNS provider can now be set up and saved at the same time.

Supports Chinese domain names provided by Oray DDNS.

QuickConnect

More Mobile Support -- QuickConnect now supports more mobile apps, including DS photo+, DS audio, and DS cloud.

Network Printer Support -- DSM now supports LPR, IPP, Socket, and BJNP network printers and can share them over the network via AirPrint, Cloud Print, LPR, CIFS, IPP protocols. Windows users can set up network printers shared by DiskStation with Synology Assistant.

Wi-Fi Connectivity Enhancements

WPA2 Enterprise -- If your DiskStation has a USB Wi-Fi adapter installed or built-in, you can join a wireless network with WPA2 Enterprise security.

The desktop version of DSM on touch-enabled devices has been enhanced to support more touch events for Safari on iPhone, iPad and Chrome on Android devices.

Application windows can be auto-maximized and auto-centered.

Users can use 3-finger gestures to switch between applications.

Users can long-press on items to right-click.

Supports double tapping items.

Certificate Management

Certificate management allows you to create a self-signed certificate or a certificate request, or import certificates to DSM for encrypted services, such as web (HTTPS), FTP, RADIUS server, and mail services.

If you enable SSH service and open its port (22) to the Internet, you may notice many attempts to access your DiskStation in System Logs, because SSH connections are now recorded in DSM 4.2. To protect your DiskStation, we suggest configuring Firewall settings to allow only select IP addresses to access your DiskStation via SSH.

Supports an alternative DNS server in network settings

You can discover your Synology NAS with SSDP (Simple Service Discovery Protocol) before DSM is installed if the Synology NAS has been installed DSM 4.2 once.

Version: 4.1-2668

(2012-12-18)

Change log:

Fixed an issue where you may not see the files via Windows File Service (CIFS protocol) after you rename them.

Fixed an issue where you may not be able to delete files via Windows File Service.

Fixed an issue where the DiskStation may not enter safe mode when a power outage occurs.

Version: 4.1-2636

Due to the hardware capability, not all of the features of DSM 4.1 are available to all models; please see below for more information. If you would like to experience the full potential of DSM 4.1 or the future release of the DSM operating system, please consider upgrading the Synology NAS to a new one.

New Feature Highlights

VMware vSphere 5.0 VAAI Support:

VAAI is now supported to provide intelligent storage server operation and optimize the performance and efficiencies in virtualization deployment.

Full Copy is supported to enable the storage array to make full copies of data within the array to improve data cloning performance.

Block Zero is supported to enable the Synology NAS to zero out large numbers of blocks to improve virtual disk initialization performance.

Firewall with Traffic Control:

The Traffic Control allows you to reserve, limit, or prioritize the bandwidth usage for difference services to help you manage your bandwidth resource effectively.

The maximum bandwidth for each network port or port range can be set up within the built-in Firewall.

Speed Limit:

In FTP, File Station,WebDAV and Network Backup settings, you can set the bandwidth for selected users, groups, to limit speed of a single user, or the total bandwidth usage for a group.

Speed limit is supported on domain users and groups including LDAP domain or Windows AD.

The file transfer sessions with speed limit can be viewed in System Information.

FTP Server:

SFTP server is supported to meet the enterprise security standard.

SFTP server port number can be either specified or the same port as SSH.

FXP is supported, enabling users to exchange files between two FTP servers directly.

Windows File Service Update:

Samba is now upgraded to 3.6 with the version of SMB protocol SMB1.

The authentication security is enhanced with NTLMv2 and updated Kerberos v5 support.

Recycle Bin on all file protocols:

Recycle Bin now works in Windows File Sharing (CIFS), File Station, FTP, AFP and WebDAV. In case that you have accidently removed important files on Synology NAS, you can still simply retrieve the files back from recycle bin.

Recycle Bin can now be enabled or disabled on different shared folders.

QuickConnect - File Sharing:

Users can now share any file links with the domain of GoFile.me without configuring port forwarding on the router.

Shared Folder Sync:

Shared Folder Sync now supports synchronization from multiple Synology NAS to the same destination. This is supported only when DSM 4.1 is running on both source and destination servers.

Resource Monitor:

The new Resource Monitor app enables you to monitor the CPU, physical memory, disks and network utilization of your Synology DiskStation.

View the swap in/out rate as well as IOPS, transfer rate, and the average loading of each disk.

Resource monitor log is now available to display the real time, 1 day, 1 week, 1 month, and 1 year of all analyzed reports with historical data.

View all the current running and idling processes on your Synology NAS.

Connection via Proxy Server:

Synology NAS can now connect to the Internet via a proxy server in your LAN. You can update DSM or packages directly in the web interface more easily.

HTTP/HTTPS proxy server and authentication are supported.

System Log:

The System Log consolidates all logs in DSM.

Spot important events including error or warning with just a few clicks.

Keyword search is available in the system log.

Linux Kernel Upgrade:

The Linux kernel has been updated to 3.2.11.

SNMP v3:

SNMP v3 is now supported for you to monitor Synology NAS with enhanced security.

IPv6 is supported to enable you to get the system status of your DiskStation.

Netatalk is updated to 2.2.3.

PHP module is updated to 5.3.15.

Openssl has been updated to 1.0.1c.

Apache is updated to 2.2.22.

Thumbnail Creation Speed:

Thumbnail creation speed on Synology NAS has been improved with the new algorithm for thumbnail creation. Below is the test result of the time spent (in seconds) to get thumbnails of 160 MB pictures done.

DSM 4.0

DSM 4.1

Improvement

DS1512+

395

150

163.33%

DS409+

565

500

13.00%

DS112+

2019

1538

31.27%

Photos can now be displayed more quickly in Photo Station in DSM 4.1 with the new thumbnail display mechanism.

You are able to set the thumbnail quality to be normal to make the thumbnail converting process a lot faster.

Package Center:

You can update all packages with a single click on the Update All button.

Beta channel in Package Center is now available for subscription if you would like to try the latest/experimental features.

Available packages can now be sorted by name or by popularity.

VPN connection is supported with reconnect automatically when the connection is lost.

NTP server is now built-in in your DiskStation.

DS video on iPhone/iPad (Available soon in App Store):

Watch videos in supported format (MP4, M4V, MOV) from the Video Station library on iPhone and iPad with DS video.

If you have plugged in a DTV dongle to your DiskStation, you will also be able to view and schedule TV program recording with DS video.

DS download on iPhone (Available soon in App Store):

DS download allows you access Download Station remotely from your iPhone; you can view the list of your download tasks and the information of each task, as well as pause, resume or delete tasks.

Create download tasks through the in-built browser in DS download, using Safari, or simply by entering URL.

Manage settings of the Download Station, including the maximum upload and download speeds for different types. Advanced schedules defined in Download Station can be activated from DS download.

DS file on iPhone/iPad and Android phone/tablet (Available soon in App Store and Play Store):

With Cloud Station integration, DS file allows you to sync files with the Cloud Station folder of your DiskStation.

Assign specific songs to be always available for listening by storing on your iOS devices. When the network connection is not available, you can switch to the offline mode and play the songs you’ve downloaded.

Version: 4.0-2219

(2012-04-17)

Change log:

Updated Photo Station, Audio Station, Surveillance Station, Media Server, iTunes Server and Download Station packages to the latest version if they were installed. Please refer to these packages’ release notes for details.